Bathtub



FIG. 1 is a front perspective view of the bathtub;

FIG. 2 is a front elevational view of the bathtub;

FIG. 3 is a left side elevational view of the bathtub;

FIG. 4 is a top plan view of the bathtub;

FIG. 5 is a rear elevational view of the bathtub;

FIG. 6 is a right side elevational view of the bathtub; and,

FIG. 7 is a bottom plan view of the bathtub.

The broken line showing of portions of the bathtub is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a bathtub, as shown and described. 